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A series of shootouts broadcast over social media in the capital of Mexican state of Sinaloa appears to be a confrontation between federal troops and members of a cartel that, according to reports, are trying to recover sons of convicted drug trafficker Joaquín “el Chapo” Guzmán who were being targeted for arrest Thursday.

Paul Villega with ADN40, a CNN affiliate, is at the scene in Culiacán, where video showed armored vehicles equipped with military-grade weaponry were exchanging heavy artillery against the authorities who tried to detain two of the infamous trafficker’s sons.

A Mexican police source and an American official told CNN that one of Guzmán’s sons was detained in the operation.

Guzmán’s lawyer, Jeffrey Lichtman, told CNN that Ovidio Guzmán was in custody. But the Los Angeles Times reported that it was unclear whether authorities managed to keep him in their custody, and he may have been released to placate the cartel members.

“There’s panic, abandoned cars and people hiding,” Lichtman said. “Apparently, two police men were shot dead.”